The girl's father, Steve Peek, said their supplies were now running low, putting the health of his daughter at risk.

"We only have enough to last until next week," he said.

"Yesterday, to try and stretch it out, we didn't give her the midday dose and at a quarter to six last night she started having seizures."

One of Ms Hallam's customers, Ben Oakley from Wollongong, said he uses the drug to relieve pain and life-threatening seizures he suffers from the rare neurological condition known as stiff person syndrome.

Mr Oakley said his syndrome used to prevent him from leaving his home.

Medicinal cannabis 'changed user's life'

Before using the oil Mr Oakley said he had suffered from more than 600 spasms over four years, some of which lasted up to two hours.

While being on the medicinal cannabis over the past 19 months, he said he has only had three spasms, which lasted no more than 20 seconds each.

"My supplier, a person who has changed my life, if not saved my life, Jenny Hallam, you are incredible," he said.

"You've been able to give me the life I thought I was going to lose.

"It's pretty disappointing the police have raided her and taken all of her crops."

"Unfortunately, with the laws that are still in place, they had no other alternative, they had to do their job and take the medication," he said.

Mr Oakley said he will run out of the oil in a few months and does not know whether he will have access to another product before his supply runs out.

He said he believed Ms Hallam supplied the oil to 200 people nationwide.

"Are we going to get on a legal supply before then, are we going to find a backup supply before then?" he said.

"It should be just as simple as going in and talking to your doctor and getting on a legal supply of medicinal cannabis. If only that were the case."

Investigations continuing into cannabis raid, police say

His father, Michael Oakley, said he felt his son's life was now in danger.

"Even after multiple meetings with the board for medicinal cannabis [and] with the [NSW] Premier himself only a few months ago, Ben does not have a legal supply," he said.

"Ben has exponentially improved since he started on medicinal cannabis 18 months ago, to the point where I can now say he has a better-than-fair chance of survival.

"Can I go with other suppliers? Yes. Do I trust them? Not necessarily.

"I am in mortal fear that my son is going to regress."

A police spokesperson confirmed to the ABC a 44-year-old woman from Hillier had been reported for drug-related offences on Wednesday and that chemicals and other substances were seized from the address.

Police said the chemicals would be forensically analysed and that investigations were continuing.

Where is medicinal cannabis legal?

Federal GovernmentMedicinal cannabis use is still illegal and only available through trials and limited special access schemes. But, earlier this year, the Federal Government passed legislation legalising the cultivation of cannabis for medicinal purposes.

QueenslandQueensland doctors will soon be able to prescribe it for their patients' treatment. New laws will give certain specialists including oncologists, paediatric neurologists and palliative care specialists the right to prescribe medicinal cannabis from March 2017. Other doctors would be able to apply to Queensland Health for permission to prescribe the drug for patients with certain conditions.